Chimney and the like



March 1952 L. DOLLINGER CHIMNEY AND THE LIKE Filed March 12, 1947 167'FLOOR u/v/r INVENTOR. LMSLOOLUN6A By AO W ATTOAP/Vf) Patented Mar. 11,1952 UNITED STATES 'ATENT OFFICE 3 Claims.

This invention relates to chimneys as well as to combined smoke fluesand heat exchangers.

The conventional brick or stone chimney is very expensive since itrequires much heavy foundation structure, large quantities of materialand much skilled labor in the construction thereof. The conventionalchimney or smoke flue, in addition, wastes considerable heat.

The present invention has for its purpose the production of a chimneywhich can be quickly constructed by unskilled workmen at relativelysmall cost.

The main feature of the present invention relates to a prefrabricatedsectional chimney or smoke flue which approximates the appearance of aconventional chimney. This smoke flue, when built within the wallstructure of the house, serves also as a heat exchanger to extract heatfrom the flue gases and to conduct this heat into one or more rooms ofthe house.

The invention will best be understood from the detailed description andclaims when taken with the drawings in which:

Fig. 1 is a vertical section of a fragment of the chimney and of theside wall of a house of which it is a part;

Fig. 2 is a cross section of the chimney or smoke flue suitable foroutside use, taken on the line 2-2 of Fig. 1;

Fig. 3 i a fragmentary perspective view of this chimney with a part ofthe outside covering thereof broken away;

Fig. 4 is a fragmentary perspective view of a modified chimney or smokeflue suitable for inside use and provided with openings to dischargeheat extracted from the flue gases therein;

Fig. 5 is a diagrammatic view showing how this last-mentioned chimneycan be used to discharge heat at various floors of a building; and Figs.6 and '7 are cross sectional views of other modifications of theinvention.

The chimney or smoke flue F when primarily intended for outdoor use ispreferably made from four plates such as 5 (Figs. 2 and 3) of fireproofmaterial, such as steel, having flanges 6 projecting outwardly fromtheir side edges at angles greater than 90. The plates are assembled inthe form of a rectangular smoke passage with adjacent flanges 6 incontact, the contacting surfaces of the flanges being sealed togethersuch as by welding. A rectangular shell 1 of expanded metal or the likeencloses at lea-st three sides of the smoke passage in spaced relationthereto. The fourth side of the mentioned shell which may be left open,faces the side wall 9 of the house 2 except for a bracket I0. to twoadjacent flanges 6 and enables the flue to be attached to the side Wallof the house. If desired, the shell can be provided with a covering IIof stucco or with a veneer-like layer of thin bricks presenting theappearance of a brick chimney. For ease in erection, the flue F can bemade in several sections, one section having a sleeve l2 (Fig. 1)connected thereto to telescope into the end of an adjacent section. Thelower section of the flue is provided with a suitable connection intowhich a smoke pipe l3 can be telescoped.

Where this chimney is erected within the building, registers such as I!(Fig. 5) are provided in the shell I and coverin H to communicate withthe several spaces between the inner shell, formed by the plates 5, andthe outer shell I. The heat extracted in these spaces, from the smokeflue,

is discharged through the registers I! into the rooms of the building.

In Fig. 4, an inside smoke flue 0r chimney is illustrated. This chimneypreferably includes a rectangular inner shell [4 of sheet materialdefining a smoke passage. A bracket I5 projects outwardly from each ofthe corners of the shell to support an outer shell [6 in spaced relationto the first shell thereby providing a heat flue which completelysurrounds the smoke flue. The outer shell has a register I! thereinpreferably in each room through which the chimney rises. Thus, if theheating unit or fireplace is in the basement a register can dischargeheat at the first and second floors as indicated in Fig. 5. In practice,the outer shell 16 is covered with heat insulating material, such asasbestos, to eliminat fire hazard. It will be understood that thechimney illustrated in Figs. 4 and 5 will be made in sections, asindicated by the broken lines in Fig. 5. In this arrangement also, onesection will be provided with a sleeve (not shown but similar to sleeveI2 of Fig. 1) to telescope into an adjacent section.

In the modified form of the invention, illustrated in Fig. 6, therectangular inner shell I9, is made by folding a single sheet offireproof material, such as sheet metal, and then sealing the adjacentedges by welding or the like. As herein shown these edges can serve as aflange 20 which extends diagonally outward from the adjacent corner ofthe shell. The other corners of the shell are provided with diagonallyextending brackets 2| of narrow width. These brackets together withflange 20, have attached thereto This bracket is joined an outer shell22, which can be similar to any of those previously referred to.

In the modification of the invention shown in Fig. 7, the inner shell 24is preferably made from sheet metal shaped to have a circular crosssection or the like. The side edges of the sheet which overlap arewelded or otherwise sealed, as indicated at 25. Relatively narrowbrackets 26 are secured to the outer surface of the shell to extendoutward therefrom. These brackets support an outer sheet 21 of thecharacter previously mentioned.

In accordance with the invention, if the inner shell which defines thesmoke passage, becomes leaky, a new sectional shell can be lowered intothe original inner shell to act as a liner therefor, defining a newsmoke passage. For this reason, the original smoke passage should havesuflicient cross sectional area that there will be ade-- quate draft,when a new liner is lowered into the original chimney.

This disclosure is given by way of example only and there can be manyvariations and modifications thereof, within the scope of the appendedclaims, without departing from the spirit of the present invention.

What I claim is:

1. A combined chimney and heat exchanger comprising elongated metalplates provided with integral continuous projecting flanges along their.

side edges, means sealing together the surfaces of the flanges ofadjacent plates to define a smoke passage and with the flangesprojecting outwardly therefrom, and a shell supported on the projectingflanges in spaced relation to said passage, to define heat flues adaptedto communicate with rooms to be heated, said shell comprising sheetmetal shaped to engage said flanges.

2. A combined chimney and heat exchanger comprising four elongated metalplates, each provided with flanges projecting from each side edgethereof at an angle greater than ninety degrees for substantially theentire length thereof, means joining said plates into arectangularly-shaped smoke passage with a pair of flanges extendingoutwardly at each of the resulting corners, the adjacent surfaces ofeach pair of flanges being in contact witheach other, and fireproofmaterial enclosing at least a portion of said passage in spaced relationthereto, being supported on said flanges to provide a plurality of heatflues, said material having openings therein communicating with certainof said heat flues and adapted to communicate with rooms to be heated.

3. A combined chimney and heat exchanger comprising four elongated metalplates, each provided with flanges projecting from each side edgethereof at an angle greater than ninety degrees for substantially theentire length thereof, means joining said plates into arectangularly-shaped passage with a pair of flanges extending outwardlyat each of the resulting corners, the adjacent surfaces of each pair offlanges being in contact with each other, a sheet of metal encased inmasonry and enclosing at least a portion of said passage in spacedrelation thereto, being supported on said flanges, said sheet having atleast one opening therein communicating with the space between saidsheet and one of said plates, and a register mounted in said opening.

LEWIS L. DOLLINGER.

REFERENCES CITED The following references are of record file of thispatent:

UNITED STATES PATENTS in the

